Fiat 500 1.4 16v – INSTRUMENT PANEL – – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

WIRING DIAGRAM - INSTRUMENT PANEL - Fiat 500 1.4 16v

INSTRUMENT PANEL - WIRING DIAGRAM Fiat 500 1.4 16v

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COMPONENTS - INSTRUMENT PANEL - Fiat 500 1.4 16v

Component Code	Description	Reference to the operation
A001	BATTERY
B001	JUNCTION UNIT
C010	LEFT FRONT EARTH	-
C015	DASHBOARD EARTH, DRIVER'S SIDE	-
E050	INSTRUMENT PANEL
H001	IGNITION SWITCH
I040	HANDBRAKE SWITCH
K020	LEFT BRAKE PAD WEAR SENSOR (SWITCH)
K025	BRAKE FLUID LEVEL SENSOR (SWITCH)
K030	ENGINE OIL PRESSURE SENSOR (SWITCH)
K036	ENGINE COOLANT TEMPERATURE SENSOR/SENDER UNIT
K046	RPM SENSOR
M001	BODY COMPUTER
M010	ENGINE MANAGEMENT ECU
M051	Braking system control unit
N040	FUEL PUMP AND LEVEL GAUGE

COMPONENT LOCATION - INSTRUMENT PANEL - Fiat 500 1.4 16v

INSTRUMENT PANEL - COMPONENT LOCATION Fiat 500 1.4 16v

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Component Code	Description	Reference to the operation
A001	BATTERY
B001	JUNCTION UNIT
C010	LEFT FRONT EARTH	-
C015	DASHBOARD EARTH, DRIVER'S SIDE	-
E050	INSTRUMENT PANEL
H001	IGNITION SWITCH
I040	HANDBRAKE SWITCH
K020	LEFT BRAKE PAD WEAR SENSOR (SWITCH)
K025	BRAKE FLUID LEVEL SENSOR (SWITCH)
K030	ENGINE OIL PRESSURE SENSOR (SWITCH)
K036	ENGINE COOLANT TEMPERATURE SENSOR/SENDER UNIT
K046	RPM SENSOR
M001	BODY COMPUTER
M010	ENGINE MANAGEMENT ECU
M051	Braking system control unit
N040	FUEL PUMP AND LEVEL GAUGE

DESCRIPTION - INSTRUMENT PANEL - Fiat 500 1.4 16v

The control panel is fitted behind the steering wheel; its position guarantees maximum visibility/legibility of the information for the driver in all vehicle usage conditions (day/night) without reflections, distortions or double images.The control panel circular display is available in two versions depending on the vehicle''s on-board technological features:COMFORT multifunctional display - LOW trim levels;MATRIX reconfigurable multifunctional display - HIGH trim levels.Both versions allow the display of the functions offered by the Bluetooth system.The MATRIX reconfigurable display also allows the display of a navigation map with the Blue & Me system.The panel includes 4 gauges, 2 of which employ step motors and 2 of which are digital gauges on the display.In both configurations a single instrument contains:Electronic speedometer;Electronic rev counter;Digital fuel level gauge;Digital engine coolant temperature gauge;Display;Warning lights.The available control panel versions (COMFORT and MATRIX) therefore differ according to the technology of the display.The display includes the display of several useful information icons, such as:engagement of CITY function;service due (spanner symbol);headlamp alignment position;outdoor temperature and ice hazard (snowflake symbol);date and time.A buzzer inside the instrument can produce signals of different intensities to perform the following functions:alarm/warning/danger signalling;parking sensor signalling;set vehicle speed exceeded;doors open signalling;handbrake applied with the vehicle moving signalling;Seat Belt Reminder;direction indicators / hazard warning lights acoustic signals;Pushbutton Roger Beep.The instrument panel is a CAN node through which information is exchanged with the Body Computer and with the other electronic units.Speedometer: its function allows the vehicle speed to be displayed on the instrument panel. This information is obtained from the braking system control unit via the Body Computer.Rev counter: this function involves the display on the instrument panel of the engine rotation speed by means of the data sent via the CAN from the engine management control unit.Mileometer: this function involves the display and memorising of the total and trip mileage: mileage information is processed by the Body Computer by means of a counter that is sent to the instrument panel via the CAN. The trip counter that forms part of the Trip Computer can be reset using the special TRIP button on the right-hand steering wheel interface lever.Engine coolant temperature: this function involves the display of the engine coolant temperature level in the instrument panel and the overheating warning light coming on by means of messages sent via the CAN from the engine management control unit.Fuel level: the Body Computer receives the signal from the sensor built into the pump assembly inside the fuel tank and processes it to guarantee suitable filtering/damping for the instrument panel digital gauge; it also controls the lighting of the reserve warning light.The instrument panel also has various warning lights.Brake pad wear status: this function involves the specific warning light coming on: the Body Computer detects the brake pad wear status when braking (signal from the brake pedal) in a prolonged manner (occasional signals are ignored).Handbrake applied: the Body Computer acquires the handbrake applied status from the dedicated switch and communicates this information to the instrument panel via the CAN; also, if this signal is associated with a determined speed threshold being exceeded, an acoustic warning is activated.Insufficient brake fluid: this function involves the insufficient brake fluid level warning light in the instrument panel coming on; the signal sent by the Body Computer via the CAN.The general failure warning light summarises the faults detected by a series of systems and components, such as:engine oil pressure sensor fault;parking sensor fault;intervention of the fuel cut off function - FPS (Fire Prevention System) signal - which cuts off the fuel;fuel cut off function not available;exterior lighting failure.The signalling of exterior lights failure via the general failure warning light is managed by the Body Computer; it contains a check function that checks the operation of the exterior lights, lighting the warning light if a fault is detected with the lights or their connection:side lights;daylight lights (DRL);number plate;rear fog light;direction indicator;vehicle stop (excluding 3rd stop).767The operation of the warning lights which do not come under any other functions is illustrated below: the other warning lights are described and illustrated in the diagrams for the components to which they refer.Together with the activation of the warning lights, there are several messages (subdivided by priority) which allow the specific identification of the fault.The use of the various settings in the instrument panel SET UP menu takes place via the MENU/ESC, + and - buttons to the right of the instrument panel. For example, settings relating to the following can be adjusted:Vehicle internal lighting adjustment;Speed limit;Trip B enablement;Time adjustment;Date adjustment;Repetition of audio information;Auto close function (automatic central locking with vehicle moving);Units of measurement (distances in Km or miles; fuel consumption in Km/l or l/100Km or mpg; temperature in °C or °F);Language selection;Volume of acoustic warnings / failure signals;Button press volume;Activation / deactivation of S.B.R. buzzer;Planned maintenance indications;Passenger Air Bag activation/deactivation;Daylight lights (DRL) activation/deactivation.In both trim levels the control panel is equipped with a brightness sensor that discriminates between night (night time) and day (daylight) conditions in order to suitably manage the lighting of the vehicle controls and displays.For further details,The instrument panel receives a direct battery power supply and an ignition-operated power supply via two lines protected by two dedicated fuses in the Body Computer.

FUNCTIONAL DESCRIPTION - INSTRUMENT PANEL - Fiat 500 1.4 16v

The ignition-operated power supply (INT) for instrument panel E050 reaches pin 3 via a line protected by fuse F37 of Body Computer M001 (pin 7 of connector E); the direct battery power supply reaches pin 2 of E050 via a line protected by fuse F53 of the Body Computer (pin 14 of connector E).Pin 1 of instrument panel E050 is connected to driver-side dashboard earth C015.Instrument panel E050 is connected from pins 5 and 6 with Body Computer M001 (pins 18 and 20 of connector D) and via the latter to the entire CAN.Body Computer M001 (pins 44 and 45 of connector B) receives the speedometer signal from braking system control unit M051 (pins 26 and 14) via the C-CAN, and forwards it to instrument panel E050.The electronic rev counter receives the engine rpm signal coming via the CAN from engine management control unit M010, connected via pins 37 and 38 of connector B to engine rpm sensor K046.The digital fuel level gauge is managed according to the signal coming from the level detector located in electric fuel pump unit N040. The Body Computer provides the sensor with a reference earth (pin 17 of connector F) and receives a proportional signal at pin 4 of the same connector, and forwards it to instrument panel E050 via the B-CAN.The handbrake applied/insufficient brake fluid level warning light is activated by an earth signal from handbrake switch I040 that reaches pin 10 of connector F of Body Computer M001, or from brake fluid level sensor K025 that reaches pin 33 of connector B of M001.Brake pad wear sensor (switch) K020 controls the associated warning light via a connection with pin 26 of connector B of Body Computer M001.Engine management control unit M010 sends signals coming from the following to the instrument panel via the CAN:insufficient engine oil pressure sensor (switch) K030, connected to pin 35 of connector B;engine coolant temperature sensor K036, connected to pins 29 (reference earth) and 43 (signal) of connector B.Braking system control unit M051 is connected, via the C-CAN line, from pins 15 and 27, to engine management control unit M010 (pins 88 and 89 of connector A), forwarding the signals described above to Body Computer M001.The internal logic of E050 also manages the headlamp adjustment function: the panel sends a control signal to the motors in the headlamps from pin 7, whilst the enablement signal reaches pin 8 (dipped headlamps on). Pressing the + or - buttons to the right of the panel controls the adjustment.The Trip Computer zeroing button (TRIP), located at the end of the right-hand lever of steering wheel interface H005, sends an earth signal to pin 9 of instrument panel E050.